Multistep purification system for automotive exhaust using redox behavior of transition metals

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K18268
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Catalyst/Resource chemical process
• Research Institution: Kyoto University
• Principal Investigator: Yoshida Hiroshi 京都大学, 実験と理論計算科学のインタープレイによる触媒・電池の元素戦略研究拠点ユニット, 特定助教 (40722426)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 貴金属代替 / 汎用元素 / 自動車触媒 / タンデム構造

Outline of Final Research Achievements

For the simultaneous purification of NO, CO and HC in automotive exhaust, a new three-way catalysis with a tandem structure was developed. In the former stage, CO oxidation was carried out over Cr-Cu/CeO2, resulting in the decrease of CO and O2 concentration. The gas which contained stoichiometric NO, C3H6 and O2 was consecutively introduced to the latter stage and NO-C3H6-O2 reaction over Pd/CeO2 was carried out for the simultaneous purification of NO and HC. The results demonstrated that the tandem structure is one of useful ways for the development of new three-way catalysis.

Free Research Field

触媒化学